High-speed precision NSK bearings are mainly used in high-speed rotation occasions with light loads. NSK bearings require high precision, high speed, low temperature rise and low vibration and a certain service life. It is often used as a pair of supports for high-speed motorized spindles, and is a key accessory for high-speed motorized spindles of internal surface grinders. Main technical indicators: 1. NSK bearing accuracy index: more than GB/307.1-94P4 level accuracy 2. High-speed performance index: dmN value 1.3~1.8x106/min 3. Service life (average):> 1500h The service life of high-speed precision NSK bearings is the same as Installation has a lot to do with the following matters: 1. The installation of NSK bearings should be carried out in a dust-free and clean room, NSK bearings should be carefully selected, and the spacers used for NSK bearings should be ground. Under the premise of equal height, the parallelism of the spacer should be controlled below 1um; 2. The NSK bearing should be cleaned before installation. When cleaning, the slope of the inner ring should be upward, the hand feeling is flexible, and there is no stagnation. After drying, put in the specified amount Grease, if it is oil mist lubrication, a small amount of oil mist oil should be put in; 3. NSK bearings should be installed with special tools, the force should be even, and knocking is strictly prohibited; 4. NSK bearings should be stored in clean and ventilated, no corrosive gas, and relative humidity not exceeding 65%, long-term storage should be regularly rust-proof.